[Clinical picture and pathogenesis of Jacksonian seizures in cerebral arteriovenous aneurysms]

The results of combined examinations of 26 patients with arteriovenous aneurysms in the brain are presented. The patients constituted two groups in one of which the aneurysm took a "neoplastic", and in the other a "vascular" course. The morphological and clinical forms of the aneurysm course that depended on the localization and size of the anomaly are described in detail. The brachial and crural types of Jacksonian seizures are specified. In the neoplastic form of the aneurysms (contrary to the vascular one) these seisures were the leading clinical symptom at the disease onset and had a complicated structure that included diverse sensitive phenomena, the tonic constituent of the convulsions and symptoms of transient cerebrovascular insufficiency. In the periods between the seizures the neurological and EEG symptoms were weak. The disturbances of the vestibular system revealed at the trunco-cortical level point to a progressing character of the disease and a high frequency of the paroxysms. The leading links in the pathogenesis of the seizures were circulatory disturbances in the system of the aneurism-carrying vessels in the neoplastic form, and cicatricial-atrophic changes at the sites of the former hemorrhages in the vascular form of the aneurism.